METHOD FOR DETERMINATION OF FRACTURED RESERVOIR AND METHOD FOR HYDROCARBON PRODUCTION Russian patent published in 2023 - IPC E21B49/00 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to a method for determination of a fractured reservoir and a method for hydrocarbon production. The method for determination of a fractured reservoir includes obtainment of vertical stresses in a target reservoir and obtainment of threshold pressure of the target reservoir. Mechanical properties of the target reservoir are obtained. A middle direction of horizontal stresses in the target reservoir is obtained. Minimum and maximum horizontal stresses in the target reservoir are determined. Ratios of inrush and caverns are assessed using profile logging of boreholes passing through the target reservoir. Calibration of minimum and maximum horizontal stresses in the target reservoir is carried out. Calibration of single-axis compression strength is carried out. Cohesion of cracks of the target reservoir is determined. An orientation of cracks in the target reservoir is obtained, tangent stress in a crack plane and effective normal stress in a crack plane are determined. The fractured reservoir in the target reservoir is determined using a criticality coefficient for cracks in the target reservoir.

EFFECT: increase in the quality, speed, and accuracy of determination of a fractured reservoir, which leads to an increase in the efficiency of exploration and development of oil and gas deposits, increase in a production rate of hydrocarbon fluid in the development of deposits.

55 cl, 10 dwg, 1 tbl